(+-)-2-(3,4-Dichlorophenyl)-N-methyl-N-((5R*,7S*,8S*)-7-(1-pyrrolidinyl)-1-oxaspiro(4.5)dec-8-yl)acetamide monomethanesulfonate 87173-97-5 Benzeneacetamide, 3,4-dichloro-N-methyl-N-(7-(1-pyrrolidinyl)-1-oxaspiro(4.5)dec-8-yl)-, (5alpha,7alpha,8beta)-(+-)-, monomethanesulfonate SPIRADOLINE MESYLATE Spiradoline mesylate [USAN] U 62066E